CTX-M-27

Accession ARO:3001889
DefinitionCTX-M-27 is a beta-lactamase found in Escherichia coli
AMR Gene FamilyCTX-M beta-lactamase
Drug Classcephalosporin
Resistance Mechanismantibiotic inactivation
Resistomes with Perfect MatchesEscherichia colip+wgs, Klebsiella pneumoniaeg+p+wgs, Salmonella entericap+wgs, Shigella flexneriwgs
Resistomes with Sequence VariantsEscherichia colip+wgs, Klebsiella pneumoniaeg+p+wgs, Salmonella entericap+wgs, Shigella flexneriwgs
Classification13 ontology terms | Show
Parent Term(s)3 ontology terms | Show
+ confers_resistance_to_antibiotic ceftazidime [Antibiotic]
+ CTX-M beta-lactamase [AMR Gene Family]
+ confers_resistance_to_antibiotic cefalotin [Antibiotic]
Publications

Bonnet R, et al. 2003. J Antimicrob Chemother 52(1): 29-35. Effect of D240G substitution in a novel ESBL CTX-M-27. (PMID 12775683)

Resistomes

Prevalence of CTX-M-27 among the sequenced genomes, plasmids, and whole-genome shotgun assemblies available at NCBI for 88 important pathogens (see methodological details and complete list of analyzed pathogens). Values reflect percentage of genomes, plasmids, or whole-genome shotgun assemblies that have at least one hit to the AMR detection model. Default view includes percentages calculated based on Perfect plus Strict RGI hits. Select the checkbox to view percentages based on only Perfect matches to AMR reference sequences curated in CARD (note: this excludes resistance via mutation as references in protein variant models are often wild-type, sensitive sequences).

Prevalence: protein homolog model (view sequences)

SpeciesNCBI ChromosomeNCBI PlasmidNCBI WGS
Escherichia coli0%0.43%1.43%
Klebsiella pneumoniae0.4%0.07%0.67%
Salmonella enterica0%0.18%0.01%
Shigella flexneri0%0%0.66%
Show Perfect Only


Detection Models

Model Type: protein homolog model

Model Definition: The protein homolog model is an AMR detection model. Protein homolog models detect a protein sequence based on its similarity to a curated reference sequence. A protein homolog model has only one parameter: a curated BLASTP bitscore cutoff for determining the strength of a match. Protein homolog model matches to reference sequences are categorized on three criteria: perfect, strict and loose. A perfect match is 100% identical to the reference sequence along its entire length; a strict match is not identical but the bitscore of the matched sequence is greater than the curated BLASTP bitscore cutoff. Loose matches are other sequences with a match bitscore less than the curated BLASTP bitscore.

Bit-score Cut-off (blastP): 500


>gb|AAO61597.1|+|CTX-M-27 [Escherichia coli]
MVTKRVQRMMFAAAACIPLLLGSAPLYAQTSAVQQKLAALEKSSGGRLGVALIDTADNTQVLYRGDERFPMCSTSKVMAAAAVLKQSETQ
KQLLNQPVEIKPADLVNYNPIAEKHVNGTMTLAELSAAALQYSDNTAMNKLIAQLGGPGGVTAFARAIGDETFRLDRTEPTLNTAIPGDP
RDTTTPRAMAQTLRQLTLGHALGETQRAQLVTWLKGNTTGAASIRAGLPTSWTVGDKTGSGGYGTTNDIAVIWPQGRAPLVLVTYFTQPQ
QNAESRRDVLASAARIIAEGL


>gb|AY156923|+|1-876|CTX-M-27 [Escherichia coli]
ATGGTGACAAAGAGAGTGCAACGGATGATGTTCGCGGCGGCGGCGTGCATTCCGCTGCTGCTGGGCAGCGCGCCGCTTTATGCGCAGACG
AGTGCGGTGCAGCAAAAGCTGGCGGCGCTGGAGAAAAGCAGCGGAGGGCGGCTGGGCGTCGCGCTCATCGATACCGCAGATAATACGCAG
GTGCTTTATCGCGGTGATGAACGCTTTCCAATGTGCAGTACCAGTAAAGTTATGGCGGCCGCGGCGGTGCTTAAGCAGAGTGAAACGCAA
AAGCAGCTGCTTAATCAGCCTGTCGAGATCAAGCCTGCCGATCTGGTTAACTACAATCCGATTGCCGAAAAACACGTCAACGGCACAATG
ACGCTGGCAGAACTGAGCGCGGCCGCGTTGCAGTACAGCGACAATACCGCCATGAACAAATTGATTGCCCAGCTCGGTGGCCCGGGAGGC
GTGACGGCTTTTGCCCGCGCGATCGGCGATGAGACGTTTCGTCTGGATCGCACTGAACCTACGCTGAATACCGCCATTCCCGGCGACCCG
AGAGACACCACCACGCCGCGGGCGATGGCGCAGACGTTGCGTCAGCTTACGCTGGGTCATGCGCTGGGCGAAACCCAGCGGGCGCAGTTG
GTGACGTGGCTCAAAGGCAATACGACCGGCGCAGCCAGCATTCGGGCCGGCTTACCGACGTCGTGGACTGTGGGTGATAAGACCGGCAGC
GGCGGCTACGGCACCACCAATGATATTGCGGTGATCTGGCCGCAGGGTCGTGCGCCGCTGGTTCTGGTGACCTATTTTACCCAGCCGCAA
CAGAACGCAGAGAGCCGCCGCGATGTGCTGGCTTCAGCGGCGAGAATCATCGCCGAAGGGCTGTAA